Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1995-11-16
1997-05-20
Richter, Johann
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
560219, C07C 6956
Patent
active
056313985
ABSTRACT:
A processes and intermediates useful for the manufacture of the Wittig ester salts are disclosed. The Wittig ester salts are known as important C.sub.5 building blocks for the manufacture of various polyenecarboxylic acid esters in the field of carotenoid chemistry.
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Yoshihara, et al, Chemical Abstracts, vol. 119, No. 21, 22, Abstract No. 225949 (1993).
Burdet Bruno
R uttimann August
Santer Jean-Marie
Siegfried Theodor
Johnston George W.
Peabody John
Pokras Bruce A.
Richter Johann
Roche Vitamins Inc.
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